he temperate and subtropical areas of the northern hemisphere,
especially the inland region of north China. To date, about 700
cultivars of jujube have been found in China, and its cultivation
area has reached 1.5 million hectares [1]. The annual output of
fresh jujube fruits is about 400,000 tons.
Jujube is rich of biological components related to both
nutritional and nutraceutical values, which is commonly served
as food, food additive, and flavoring for thousands of years in
China. Studies have found that jujube contains various nutrients,
including vitamins, trace minerals, proteins, and sugars [2,3].
Jujube has also been found to have various secondary
metabolites, such as triterpenoids [4–6], flavonoids [7,8],
cerebrosides [9], and phenolic acids